Detective Charlie Chan springs into action when top officials of a New Orleans chemical company begin dropping like flies.

Roland Winters
as Charlie Chan

Virginia Dale
as Rene Blanchette

Mantan Moreland
as Birmingham Brown

John Gallaudet
as Pete McNalley

Victor Sen Yung
as Tommy Chan

Carol Forman
as Nita Aguirre

Douglas Fowley
as Grock

Harry Hayden
as Oscar Swenstrom

Emmett Vogan
as Henri Castanaro

Howard Negley
as Andre Pereaux